28183257

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{787}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 42778944

約数和(自身を除く): 14595687

約数列:

[1, 3, 9, 23, 69, 173, 207, 519, 787, 1557, 2361, 3979, 7083, 11937, 18101, 35811, 54303, 136151, 162909, 408453, 1225359, 3131473, 9394419, 28183257]

約数ペア:

[(1, 28183257), (3, 9394419), (9, 3131473), (23, 1225359), (69, 408453), (173, 162909), (207, 136151), (519, 54303), (787, 35811), (1557, 18101), (2361, 11937), (3979, 7083)]